Coffee ratios

1 : x means one gram of dry coffee to x grams of brew water or, for espresso, x grams in the cup. Choose the known quantity: coffee, brew water, or espresso. The other mass is calculated immediately. Changing the known quantity converts a valid current recipe; changing the method loads its starting ratio and retains the entered mass.

Examples: 15 g coffee at 1:16 → 240 g brew water; 320 g brew water at 1:16 → 20 g coffee. Espresso: 18 g at 1:2 → 36 g in the cup, or 54 g espresso at 1:3 → 18 g coffee. Brew water is the amount added, not the finished filter drink: absorption and losses are not modeled. Cold-brew output is steeping water, not concentrate yield.

Milk choices are editable-size examples based on 36 g espresso: Cortado 45 g, Flat white 110 g, Cappuccino 120 g, Latte 220 g, Macchiato 15 g, Mocha 200 g milk. Milk scales with espresso mass, not dry coffee. These are examples rather than fixed definitions. Foam volume and chocolate are not calculated; grams are not millilitres. Filter methods ignore milk.

Method ratios, grind, time and temperature are starting points, not extraction simulations or quality guarantees. The tasting example is not a standardized assessment. Respect your device capacity and its instructions. Reset restores V60, 20 g coffee and 1:16; navigation/reload retain inputs and the open tips. Invalid or unrepresentable values block the whole result; numerical underflow is not shown as zero.